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Digital Electronics

Digital Electronics
10’s complement of 63325600 is

 633256600
 36674400
 36774400
 366744399

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Digital Electronics
The maximum positive and negative numbers which can be represented in two’s complement form using n bits are respectively,

 +(2n-1-1),-(2n-1-1)
 +(2n-1-1),-2n-1
 +2n-1,-2n-1
 +2n-1,-(2n-1+1)

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Digital Electronics
What is the radix of octal number system ?

 16
 10
 2
 8

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Digital Electronics
In SSI, the number of gate circuits per chip is

 < 12
 < 6
 < 25
 < 20

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Digital Electronics
What is the logic which controls a stair case light associated with two switches A and B located at the bottom and top of the stair case respectively?

 X-OR
 AND
 OR
 X-NOR

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Digital Electronics
The voltage levels for negative logic system

 may be negative or positive
 must necessarily be 0 V and –5 V
 must necessarily be positive
 must necessarily be negative

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